shithub: gopher

ref: b4e186a54a0c902854f7d709d1edb31946216065
dir: /libpanel/snarf.c/

#include <u.h>
#include <libc.h>
#include <draw.h>
#include <event.h>
#include <panel.h>
#include "pldefs.h"

void plputsnarf(char *s){
	int fd;

	if(s==0 || *s=='\0')
		return;
	if((fd=open("/dev/snarf", OWRITE|OTRUNC))>=0){
		write(fd, s, strlen(s));
		close(fd);
	}
}
char *plgetsnarf(void){
	int fd, n, r;
	char *s;

	if((fd=open("/dev/snarf", OREAD))<0)
		return nil;
	n=0;
	s=nil;
	for(;;){
		s=pl_erealloc(s, n+1024);
		if((r = read(fd, s+n, 1024)) <= 0)
			break;
		n += r;
	}
	close(fd);
	if(n <= 0){
		free(s);
		return nil;
	}
	s[n] = '\0';
	return s;
}
void plsnarf(Panel *p){
	char *s;

	if(p==0 || p->snarf==0)
		return;
	s=p->snarf(p);
	plputsnarf(s);
	free(s);
}
void plpaste(Panel *p){
	char *s;

	if(p==0 || p->paste==0)
		return;
	if(s=plgetsnarf()){
		p->paste(p, s);
		free(s);
	}
}